Jimmy Hoffa, the famous labor union leader, disappeared in 1975 and was declared legally dead in 1982. His disappearance is often linked to his ties with organized crime and his controversial leadership of the Teamsters Union. Despite various leads and extensive FBI investigations, the case remains unsolved, and Hoffa's body has never been found.

In 1947, the mutilated body of Elizabeth Short, dubbed "The Black Dahlia," was found in Los Angeles. The murder, characterized by its brutality and the enigmatic life of the victim, sparked one of the most extensive investigations in LA history. Despite numerous suspects and theories, the case remains unsolved.

In 1959, nine experienced hikers in the Ural Mountains of the Soviet Union died under mysterious circumstances. The investigation found that they had fled their tents in sub-zero temperatures without proper clothing. Theories about their deaths range from an avalanche to military involvement, but the true cause remains unknown.

In 1937, pioneering aviator Amelia Earhart vanished while attempting to circumnavigate the globe. Her disappearance over the Pacific Ocean has led to endless speculation and numerous theories, ranging from a crash at sea to being captured by Japanese forces. The mystery of her fate continues to intrigue historians and adventurers.

Spanning the late 1960s and early 1970s in Northern California, the Zodiac Killer case remains one of the most infamous unsolved mysteries. The killer was known for sending cryptic messages and ciphers to the press. Despite extensive investigations and numerous suspects, the identity of the Zodiac Killer has never been confirmed.